Home / 1,189,443.64-1,640,965.08-679,872.64

Finding the Fourth Proportional to 1,189,443.64, 1,640,965.08 and 679,872.64

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Solution

The fourth proportional to 1,189,443.64, 1,640,965.08 and 679,872.64 is: 937,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,443.64 : 1,640,965.08 = 679,872.64 : x
  2. Step 2: Convert to fraction form
    1,189,443.64/1,640,965.08 = 679,872.64/x
  3. Step 3: Cross multiply
    1,189,443.64x = 1,640,965.08 × 679,872.64
  4. Step 4: Simplify right side
    1,189,443.64x = 1,115,647,261,087.41
  5. Step 5: Solve for x
    x = 1,115,647,261,087.41/1,189,443.64
  6. Step 6: Final answer
    x = 937,957.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.